Water treatment device and water treatment method for a passenger aircraft

Abstract

The invention relates to a water treatment device for a passenger aircraft including a water inlet port, a water outlet port, a pipe for connecting the water inlet port to the water outlet port, a filtration device located in the pipe and an electronic control device, wherein the electronic control device is adapted to monitor at least one parameter associated with the status of the filtration device: volume of water flowing through the filtration device on the basis of a corresponding measuring signal; time period after a filter exchange in the filtration device; and/or pressure loss over the filtration device on the basis of a corresponding measuring signal; and, if the monitored parameter fulfils certain criteria, to determine a filter exchange request and to output a filter exchange signal.

1 . A water treatment device for a passenger aircraft including a water inlet port, a water outlet port, a pipe for connecting the water inlet port to the water outlet port, a filtration device located in the pipe and an electronic control device, wherein the electronic control device is adapted to monitor at least one parameter associated with the status of the filtration device:
 volume of water flowing through the filtration device on the basis of a corresponding measuring signal;   time period after a filter exchange in the filtration device; and/or   pressure loss over the filtration device on the basis of a corresponding measuring signal;   and, if the monitored parameter fulfils certain criteria, to determine a filter exchange request and to output a filter exchange signal.   
     
     
         2 . The device according to  claim 1 , including at least one sensor for measuring a pressure loss over the filtration device. 
     
     
         3 . The device according to  claim 1 , wherein the electronic control device is adapted to turn off the drinking water system in the event of a filter exchange not being carried out. 
     
     
         4 . The device according to  claim 1 , including at least one further filtration device connected parallel to the filtration device. 
     
     
         5 . The device according to  claim 1 , wherein the electronic control device is adapted to switch from one filtration device, for which a filter exchange request has been determined, to another filtration device. 
     
     
         6 . A drinking water system in a passenger aircraft, including a fresh water tank device, at least one ring pipe connected to the tank device for feeding tapping points, and a water treatment device comprising a water inlet port, a water outlet port, a pipe for connecting the water inlet port to the water outlet port, a filtration device located in the pipe and an electronic control device, wherein the electronic control device is adapted to monitor at least one parameter associated with the status of the filtration device:
 volume of water flowing through the filtration device on the basis of a corresponding measuring signal;   time period after a filter exchange in the filtration device; and/or   pressure loss over the filtration device on the basis of a corresponding measuring signal;   and, if the monitored parameter fulfils certain criteria, to determine a filter exchange request and to output a filter exchange signal.   
     
     
         7 . The drinking water system according to  claim 6 , including at least one sensor for continuously measuring the volume of the refilled fresh water. 
     
     
         8 . The drinking water system according to  claim 6 , including a water softening device. 
     
     
         9 . The drinking water system according to  claim 6 , wherein the water softening device is drainable. 
     
     
         10 . The drinking water system according to  claim 6 , wherein the electronic control device is adapted to monitor a parameter associated with the status of the water softening device and, if the monitored parameter fulfils certain criteria, to determine a softener exchange request and to output a softener exchange signal. 
     
     
         11 . The drinking water system according to  claim 6 , wherein the electronic control device is adapted to determine the softener exchange request if a total volume flow determined on the basis of a corresponding measuring signal is exceeded. 
     
     
         12 . The drinking water system according to  claim 6 , wherein the electronic control device is adapted to control a device for feeding and discharging substrate and/or a regenerating substance to or from the water softening device if a softener exchange request has been determined. 
     
     
         13 . The drinking water system according to  claim 6 , wherein the water softening device includes an exchangeable cartridge containing substrate. 
     
     
         14 . The drinking water system according to  claim 6 , including a controllable display device for visually displaying a filter exchange request and/or a softener exchange request if a corresponding control signal is received from the control device. 
     
     
         15 . A water treatment method for a passenger aircraft using a filtration device, characterized by automatically monitoring at least one parameter associated with the status of the filtration device:
 volume of water flowing through the filtration device on the basis of a corresponding measuring signal; time period after a filter exchange in the filtration device; and/or a pressure loss over the filtration device on the basis of a corresponding measuring signal; and, if the monitored parameter fulfils certain criteria, determining a filter exchange request and outputting a filter exchange signal.